Beenpoeceb plastse boasd



laster board (olllpi'lSlV a lastic body having a .Singlc .sheet of fibrous material folded to cover both faces Of said body and adberng tl 'e"to, said sheet being foldetl back upon itself and embedded .in said body to form a Ifelll( Teinent, said reinforeetnent being coextensive with the faces Of said body.

6. L`x plaster board compl'iSing a plastic body llaving' a covering consistingiof a single sheet folded to envelop the faces and edges of said body and folded back upon itself so as to be embedded in said body and form :l reinforcemen, said sheet adl lerng to said body.

7. A plaster board compusinggg 'Ll plastic b ly having a single sheet of paper folded to completely envelop the faces and edges Ul? said body and folcled back 111-3011 itself so as to be embedded in. said body, said folded porion having a reinforeernent coextensive Witll the faces Of said body.

n witness claat I claim the i'ore geing have bereunto subscribed my name this 2211d day of March, 1999.

JOl-IN SCEUMACI IER. 

